Beyond Linux From Scratch - Version 6.1

Chapter 11. System Utilities

UnZip-5.52

Introduction to UnZip

The UnZip package contains ZIP extraction utilities. These are useful for extracting files from ZIP archives. ZIP archives are created with PKZIP or Info-ZIP utilities primarily in a DOS environment.

Package Information

Additional Downloads

Installation of UnZip

Install UnZip by running the following commands: 

patch -Np1 -i ../unzip-5.52-fix_Makefile-1.patch &&
patch -Np1 -i ../unzip-5.52-fix_libz-1.patch &&
patch -Np1 -i ../unzip-5.52-dont_make_noise-1.patch &&
cp -v unix/Makefile . &&
make prefix=/usr LOCAL_UNZIP=-DUSE_UNSHRINK linux &&
make prefix=/usr LOCAL_UNZIP=-DUSE_UNSHRINK linux_shlibz

To test the results, issue: LD_LIBRARY_PATH=$PWD && make check.

Now, as the root user: 

make prefix=/usr LOCAL_UNZIP=-DUSE_UNSHRINK install &&
cp -v -d libunzip.so* /usr/lib

Command Explanations

make prefix=/usr LOCAL_UNZIP=-DUSE_UNSHRINK linux: This command overrides the prefix variable that is set to /usr/local in the Makefile, sets the LOCAL_UNZIP environment variable to instruct UnZip to use the shrinking algorithm based on the LZW compression algorithm, and builds the executables for a Linux system. The alternatives to 'linux' can be seen with a make list command.

make ... linux_shlibz: Build shared libunzip and link UnZip against it and zlib.

Contents

Installed Programs: funzip, unzip, unzipfsx, zipgrep, and zipinfo
Installed Library: libunzip.so
Installed Directories: None

Short Descriptions

funzip

allows the output of unzip commands to be redirected.

unzip

lists, tests or extracts files from a ZIP archive.

unzipfsx

is a self-extracting stub that can be prepended to a ZIP archive. Files in this format allow the recipient to decompress the archive without installing UnZip.

zipgrep

searches files in a ZIP archive for lines matching a pattern.

zipinfo

produces technical information about the files in a ZIP archive, including file access permissions, encryption status, type of compression, etc.

libunzip.so

contains the API functions required by the UnZip programs.

Last updated on 2005-08-01 13:29:19 -0600